#include <bits/stdc++.h>
#define FOR(i, a, b) for(int i = (a), _b = (b); i <= _b; i++)
#define fi first
#define se second
#define sz(a) (int)a.size()
#define pb push_back
#define el "\n"
 
using namespace std;
const int N = (int)1e6+3;
typedef long long ll;
int x;
 
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);    cout.tie(NULL);
    freopen("watermelon.inp", "r", stdin);
    freopen("watermelon.out", "w", stdout);
    cin >> x;
    if ((x&1) || (x == 2)) cout << "YES";
    else cout << "NO";
    return 0;
}
 

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